Super Probiotic Plus formula provides you with 5 billion colony-forming units (CFU) per capsule. Acidophilus is a friendly bacteria for the digestive system that supports overall well-being. All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose GMPs (Good Manufacturing Practices) are independently verified by qualified certification organizations. Free of artificial colors, flavors and preservatives, Windmill is a trusted name that has been providing America with quality supplements for over 40 years. Gluten Free